no
Some of them are, but not all of them. A parallelogramis a rectangle only if all of its angles are equal.
Square
a rhombus has all equal sides but a parallelagram only has two equal sides.
The answer to this question is a parallelagram
Not necessarily, but it can.
parallelagram
a trapizoid(:? i think!!(::
parallelagram
0 or 4
A rectangle or a square.
parallelagram
yes, when opposite angles and sides are congruent